LP3906 datasheet(27/47 Pages) TI

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LP3906

www.ti.com

SNVS456M – AUGUST 2006 – REVISED MAY 2013

BUCK AND LDO STATUS REGISTER (BKLDOSR) – 0X11

This register monitors whether the Bucks and LDOs meet the voltage output specifications.

Name

BKS_OK

LDOS_OK

LDO2_OK

LDO1_OK

—

BK2_OK

—

BK1_OK

Access

—

Data

0 – Buck 1-2

0 – LDO 1-2

0 – LDO2 Not

0 – LDO1 Not

Reserve

0 – Buck2 Not

Reserve

0 – Buck1 Not

Not Valid

Valid

1 – Bucks Valid

1 – LDOs Valid

1 – LDO2 Valid

1 – LDO1 Valid

1 – Buck2 Valid

1 – Buck1 Valid

Reset

BUCK VOLTAGE CHANGE CONTROL REGISTER 1 (VCCR) – 0X20

This register selects and controls the output target voltages for the buck regulators.

D7-6

D3-2

Name

—

B2VS

B2GO

—

B1VS

B1GO

Access

—

R/W

—

R/W

Data

Reserved

Buck2 Target Voltage

Buck2 Voltage Ramp

Reserved

Buck1 Target Voltage

Buck1 Voltage Ramp

Select

CTRL

Select

CTRL

0 – B2VT1

0 – Hold

0 – B1VT1

0 – Hold

1 – B2VT2

1 – Ramp to B2VS

1 – B1VT2

1 – Ramp to B1VS

selection

Reset

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LP3906 Datasheet(PDF) 27 Page - Texas Instruments

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